Say hello to the second tallest mountain in America: Mount St. Elias in Wrangell-St. Elias National Park & Preserve in Alaska. Standing over 18,000 feet tall, it towers over Icy Bay, which gets its name from the glaciers that run down Mount St. Elias’s slopes. It’s just one of the many amazing natural sights in America’s largest national park. Photo by Bryan Petrtyl, National Park Service. Posted on Tumblr by the US Department of the Interior, 4/25/17.